Whelen's "newest" LED date change

[firebuff17]

Searched around a bit and couldn't find the answer.
What is the manufacture date on Whelen's LED heads when they updated to the newest leds? Specifically blue and amber.
Might be in the market for some 500 series heads. Prices fluctuate drastically between different avenues. Just looking to see when Whelen made the change. This will help me with price point when looking at different sellers pricing.

Thanks

 

[dmathieu]

Amber was late 2011. Nov. or dec.
Huge change in brightness.

 

[Jman423]

Amber was late 2011. Nov. or dec.
Huge change in brightness.

Is that when the color got all funky though? Some amber LEDs were peachy and others were just washed out.

 

[dmathieu]

I think there were some color differences noted by some users after the change. I never really noticed a color problem, just the massive difference in brightness. Discussed below.
http://elightbars.org/forums/thread...ter-heated-lenses-hardcoat.21004/#post-363159

 

[firebuff17]

dmathieu
Thank you so much. Exactly what I was looking for. I ran numerous searches but the thread you linked to is the one I remember reading about the change but couldn't remember the date.